Flexible-pipe cotjpliira



E. WANAMAKER. FLExlLE PIPE couPuNG.

APPLICATION FILED JAN. 20. 1916.

Patented July 15, 1919.

` ERNEST WANAMAKER; F CHICAGO, ILLINOIS.

FLEXIBLE-PIPE GOUPLING.

To all whom t may concern:

Be it known that I, ERNEST WANniuAKER, a citizen ofthe United States, res1d1ng at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Flexible-Pipe Couphngs, of which the following is a full, clear, and exact description.

My inventionrelates to coupling for pipes and conduits, and particularly to coupllng for flexible pipes and hose used in connection for transmitting water or steam or air under pressure.

`The object of my invention is to provlde a coupling other packing of an elastic character will be compressed within the female member by the insertion of the male member in such position that the fluid or gas must pass through the same in order to escape and leak therefrom. It is also an object of my invention to so dispose of this gasket that While it is firmly retained in place it can be easily removed and replaced when worn out. This I accomplish by the means hereinafter fully described and as particularly pointed out in the claim.

In the drawings:

Figure l is a longitudinal central section f through the parts of my improved coupling.

Fig. 2 is an end view of the female member.

Fig. 3 is a similar view of the male member, and

Figs. 4 and 5 are perspective views of the broken away end portions respectivel The femalemember of this coupling comprises a tubular element, one end of Which is less in diameter than the other and is exteriorly corrugated to form a stub A, which is adapted to be forced into and su1tably secured inthe bore of the end of the flexible pipe or hose B (shown in dottedlines in Fig.- l) in connection with which 1t 1s adaptad to be used. The opposite-end portion of ;his member is greater in diameter and conititutes the head C, and near the stub there- )f its throat a is increased in diameter o correspond with that of the forward end` f the male member. This throat a extends ut for a short distance toward the mouth if the head and is then again stepped or ucreased in diameter to lform an annular eat b for the reception of a gasket or pack-r` ig-ring D of compressible or elastic mate- Specication of Letters Patent.

so constructed that a gasket or` of said members,

, Patented July 15, 1919.

Application lcd January 20.1916. Serial N o. 73,109.

rial. The side of this seat b nearest Y the mouth of head C is defined by an inwardly projecting circumferential flange c, and the inner circumference of this flange is slightly greater than the circumference of throat a, the diameter` of the mouth of said female member beyond this flange remains the same. kThe mouth of said female member is provided with two diametrically oppositev inwardly projecting studs E, E.

he male member of my improved coupling is also provided With a stub e, the diameter and exterior construction of which is similar to stub A and is adapted to be secured in the adjacent end of its section of pipe or hose, and the bore of said member is the same diameter throughout its length and corresponds to that of the bore of stub A. Immediately next its stub its outer diameter is 'stepped or increased to form a boss F and about midway the length of this boss it is provided with a circumferential flange G the diameter of which corresponds to that of the mouth of the female member. This flange G is provided, at points diametrically opposite each other, with recesses f, f, the dimensions of which are such as to enable studs E, E, to pass therethrough when said flange is inserted in the mouth of ,the female member. When this is done the forward end of the male member will enter and fit snugly in throat a of the female member; the forward portion of the boss will fit snugly Within the circumference of flange c, and the shoulder terminating the advanced end of said boss will engage and compress the gasket or packing-ring, substantially as shown in Fig. l of the drawings.

In order to retain the two parts of the coupling in the relative position just described,l and as illustrated in Fig. 1 of t-he drawings, it is necessary to turn either said male or said female part on its ,axis to move studs E, E, back of flange G and thus prevent their withdrawal. In view of the fact that the handling of the flexible pipe or hose, to which my improved coupling may be applied, might accidentally turn eit er one or both parts of the coupling and bring studs E. E, into such position that they could accidentally work out through recesses f, 7", and thus cause the parts of the couplin to separate, I have provided the side of sai flange G, farthest from the forward end or nozzle of the male member, with recessed seats Ic, lc, that are located diametrically opposite each other in such position that said studs will automatically seat themselves therein when said parts are properly united and prevent, the independent of thediameter 0f the inner circumference of turning or rotation of the same.

The only place where ythe escape from my improved coupling is between the outer circumference of the advanced end or nozzle of the male member and the circumferential walls of the'throat of the female member. When the two parts of the coupling are in engagement, as shown in Fig. l ofthe drawings, the mechanical compression of the gasket, and such compression as the liquid or gas seeking to escape therefromwill cause, will have a tendency to expand the gasket and absolutely prevent the escape of the medium7 whether gas or liquid,

passing through the pipe or hose in connection with which my improved coupling is employed.

What I claim as new is A coupling of the kind specified comprising a tubular female member having a head the diameter of fthe bore of which is greater than that of the stub extending therefrom, and the diameter of the bore of said head being stepped to a still greater diameter for a portion of its length extending Aback from and including the mouth of the same; said greater bore being provided with an inwardly projecting annular flange whose inner circumference exceeds thatof the rear liquid or gas can end of the bore oflthe head, .which latter, at

'the mouth thereof, is provided with spaced apart inwardly projecting studs the distance between the ends of' which is greater than that said annular flange, and a eompressible packing ring the diameter of whose inner circumference corresponds to that of the rear end of the bore of the head and seated in and fill ing the annular space between the said annular flange and said rear end, in combination with a tubular male member the diameter of the advanced end portion of which corresponds to the diameter of the inner end of the 4bore of the head of the fem-ale member and which, at a point a distance back from its extremity exceeding the width of said packing ring, is stepped to a greater diameter not exceeding the inner circumference of the inwardly projecting annular flange of said v female member, and, at a point back from said step a dlstance exceeding the width of saidd inwardly projecting flange is provided with an outwardly projecting annular flange having recesses in its circumference through which the studs of said female member are adapted to pass.

In witness whereof I have hereunto set my hand this 11th day of January, 1916.

' ERNEST WANAMAKER. Witnesses:

FRANK D. THoMAsoN, F. R. MITCHELL. 

